From: Keith Packard <keithp@keithp.com>
Date: Sat, 18 Jul 2009 05:10:43 +0000 (-0700)
Subject: Fix up serial debug output
X-Git-Tag: 0.5~23
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=1150aa850f5a025b849556e32c4dddb27937d9af;ds=inline

Fix up serial debug output
---

diff --git a/src/ao_serial.c b/src/ao_serial.c
index f2f5e697..7bc11b97 100644
--- a/src/ao_serial.c
+++ b/src/ao_serial.c
@@ -60,7 +60,7 @@ ao_serial_getchar(void) __critical
 		ao_sleep(&ao_usart1_rx_fifo);
 	ao_fifo_remove(ao_usart1_rx_fifo, c);
 	if (serial_echo) {
-		printf("%02x\n", (uint8_t) c);
+		printf("%02x\n", ((int) c) & 0xff);
 		flush();
 	}
 	return c;